The
Hindenburg Line (an Allied term for the German , or Siegfried Position) was a German defensive position of
World War I, built during the winter of 1916–1917 on the
Western Front, from Arras to Laffaux, near Soissons on the Aisne. In 1916, the
Brusilov Offensive had inflicted huge losses on the Austro-Hungarian armies in Russia and forced the German eastern armies to take over more of the
Eastern Front. The declaration of war by
Romania had placed additional strain on the German war economy and army. The German offensive at the
Battle of Verdun had been a costly failure and Anglo-French attacks on the Western Front had inflicted serious losses on the German army, during the French counter-offensive at Verdun and the joint offensive on the
Somme. Construction of the Hindenburg Line had begun in September 1916 and was intended to counter an anticipated increase in the power of Anglo-French attacks in 1917.